Surge relief valve
AssigneeDeZURIK, Inc.
InventorTimothy M. O'Shea
Life of this patent
Estimating the term…
Abstract
A surge relief angle valve (SRA) is disclosed. The surge relief angle valve is held normally-closed by one or more compression spring(s). In certain embodiments the surge relief angle valve includes a body containing a disc and disc seat; a piston and shaft, the piston and shaft in communication with the disc and disc seat; and a spring providing a force against the piston; wherein the spring is enclosed within a housing and wherein the surge relief valve has a closed self-contained hydraulic system containing the piston and shaft, and providing a dampening force against the spring force.
Claims16
A surge relief valve, the surge relief valve comprising:
- a body containing a fluid flow pathway through the body, a disc, and disc seat configured to control flow through the pathway, wherein the disc and the disc seat are aligned coaxially with an inlet of the valve, and wherein the disc comprises a lower face configured to mate with the disc seat, wherein the lower face of the disc faces the fluid flow pathway;
- a piston and shaft, the piston and shaft in communication with the disc and disc seat;
- and
- a spring providing a force against the piston;
- wherein the spring is enclosed within a housing;
- wherein the surge relief valve has a closed self-contained hydraulic system containing the piston and shaft, the self-contained hydraulic system containing hydraulic oil within which the piston and shaft are positioned, and providing a dampening force against the spring force;
- wherein the disc is held in a closed position by the spring and the disc moves to an open position when a system pressure rises above a relief pressure setting of the spring;
- and
- wherein the self-contained hydraulic system is positioned outside of the fluid flow pathway and is isolated from fluids flowing through the fluid pathway.
A surge relief valve, the surge relief valve comprising:
- a body containing a fluid flow pathway through the body, a disc and disc seat configured to control flow through the pathway wherein the disc and the disc seat are aligned coaxially with an inlet of the valve, and wherein the disc comprises a lower face configured to mate with the disc seat, wherein the lower face of the disc faces the fluid flow pathway;
- a piston and shaft, the piston and shaft in communication with the disc and disc seat;
- and
- at least two springs providing a force against the piston;
- wherein the springs are enclosed within a housing and
- wherein the surge relief valve has a closed self-contained hydraulic system containing the piston and shaft, and providing a dampening force against the spring force, the self-contained hydraulic system positioned outside of the fluid flow pathway and is isolated from fluids flowing through the fluid pathway;
- wherein the surge relief valve has a cylinder chamber integrated into the cover;
- the cylindrical chamber containing hydraulic oil into which the piston is submerged and;
- wherein the disc is held in a closed position by the spring and the disc moves to an open position when a system pressure rises above a relief pressure setting of the spring.
Dependencies are inferred from the claim text.